XY301R-500 XY301R-508 Material Contact : Brass(CuZn) (metal housing) Terminal screw : Steel Galvanized and chormatized of Nickel plated or Tin plated (Standard option) Wire guard : Brass/Stainless steel Suface of solder tail : Tin plated Insulator body : Polyamide(Glass filled) / PBT (housing) (UL94V-0) Electrical Voltage rating : 250VAC Current rating : 16Amps/way max. Insulation resistance : 5000MΩ/1000V Wire range : 14-22AWG Operation temperature : -33℃ to+120℃ Torque : 4kg-cm/M2.5